Charles,
I know it is hard, but try to relax. Here are the stats you have been searching for.
"An accepted risk of an asymptomatic hematuria patient having Risk of bladder or renal cancer is 0.5%." Read the supporting documents, below, then see the better news at the end.
SOURCES:
"What is the prevalence of serious urologic disease with hematuria? In pts with asymptomatic microscopic hematuria, risk of neoplasm, calculi, hydronephrosis is 2.3%. Risk of bladder or renal cancer is 0.5%."
Source:
medicine.ucsf.edu/education/resed/Chiefs_cover_sheets/hematuria.pdf
Estimated New Cases of bladder cancer in 2017 is 79,030.
seer.cancer.gov/statfacts/html/urinb.html
Estimated New Cases in 2017 is 63,990
seer.cancer.gov/statfacts/html/kidrp.html
Since there is ONLY an 0.5% of either bladder OR kidney cancer given the above patient assumptions, we can distribute the risk based on the number of annual new cases. For that patient, then the bladder cancer risk is just 0.28%, and the kidney risk is 0.22%
It is thus clear that the asymptomatic hematuria patient is 99.72% likely to NOT have bladder cancer. Do continue to have a full work up, but there is no cause at this point to assume the worst.
Best,
Jack